The main fuse in a Honda Accord is typically located in the engine‑bay fuse box near the battery, using a large amperage fuse labeled MAIN, MAIN FUSE or B+.
Because Honda has changed layouts across generations, the exact position can vary. This guide helps you identify the location and how to check it safely for your model year.
Understanding the main fuse
The main fuse protects the entire electrical system by interrupting current if a fault occurs. In most Accords, you’ll find it in the under-hood fuse/relay box close to the positive battery terminal. Some older models relied on a fusible link in the engine bay harness or a different main relay layout instead of a dedicated main fuse block. Always verify with the fuse box diagram.
Where to find it on typical Honda Accords
The exact layout depends on the generation, but the most reliable sign is the large 60–100 A fuse marked MAIN, MAIN FUSE or B+ on the fuse box lid. The following locations cover the majority of recent and older frames:
- Engine compartment fuse/relay box near the positive battery terminal; look for a large fuse rated 60–100 A labeled MAIN, MAIN FUSE, or B+ on the lid diagram.
- On some older models (late 1990s to early 2000s), the main power may be supplied through a fusible link in the engine bay harness near the starter rather than a separate main fuse slot.
- Always consult the fuse box cover diagram or the owner's manual for the exact position and amperage; the diagram is typically printed on the inside of the cover or in the manual.
- If you’re unsure, check with a dealer or repair manual specific to your year and trim for precise locator and amperage values.
In practice, most drivers will find the main fuse in the under-hood fuse box near the battery, with the lid diagram guiding the exact slot. If the area is not obvious, tracing the thick main power cable from the positive battery terminal can also lead you to the main fuse or fusible link location.
What to do if the main fuse blows
Blown main fuses cut power to essential systems. If you suspect a blown main fuse, follow these guidelines to inspect and replace safely.
- Before touching electrical components, safely disconnect the negative battery cable to prevent shorts.
- Open the under-hood fuse/relay box and locate the main fuse (labelled MAIN, MAIN FUSE or B+). Remove it with a non-conductive fuse puller if available.
- Inspect the fuse element for a complete break or a melted appearance; replace only with the same amperage rating as specified on the fuse box diagram.
- After replacement, reattach the battery and start the engine to verify power to the electrical systems.
If a new main fuse blows again soon after replacement, there may be an underlying electrical fault (short circuit, wiring harness damage, or faulty component). Have the system checked by a qualified mechanic to avoid damage or fire hazards.
Summary
For most Honda Accords, the main fuse is located in the engine bay under-hood fuse box near the battery, identified by a large fuse labeled MAIN, MAIN FUSE, or B+. Some older models used a fusible link in the engine bay. Always check the fuse box diagram on the cover or in the owner's manual for the exact location and amperage. If you’re unsure or the fuse keeps blowing, consult a dealer or qualified technician.